Search for heavy pseudoscalar and scalar bosons decaying to a top quark pair in proton-proton collisions at √s = 13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Reports on Progress in Physics (Q1) | ||
| Dergi ISSN | 0034-4885 Dergi Bilgileri (2025) | ||
| Makale Dili | İngilizce | Basım Tarihi | 12-2025 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 01-12-2025 |
| Cilt / Sayı / Sayfa | 88 / 12 / – | DOI | 10.1088/1361-6633/ae2207 |
| Makale Linki | https://arxiv.org/abs/2507.05119 | ||
| UAK Araştırma Alanları |
Nükleer Fizik
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| Özet |
| A search for pseudoscalar or scalar bosons decaying to a top quark pair () in final states with one or two charged leptons is presented. The analyzed proton-proton collision data was recorded at = 13 TeV by the CMS experiment at the CERN LHC and corresponds to an integrated luminosity of 138 fb. The invariant mass of the reconstructed system and variables sensitive to its spin and parity are used to discriminate against the standard model background. Interference between pseudoscalar or scalar boson production and the standard model continuum is included, leading to peak-dip structures in the distribution. An excess of the data above the background prediction, based on perturbative quantum chromodynamics (QCD) calculations, is observed near the kinematic production threshold, while good agreement is found for high . The data are consistent with the background prediction if the contribution from the production of a color-singlet quasi-bound state , predicted by nonrelativistic QCD, is added. Upper limits at 95% confidence level are set on the coupling between the pseudoscalar or scalar bosons and the top quark for boson masses in the range 3651000 GeV, relative widths between 0.5 and 25%, and two background scenarios with or without contribution. |
| Anahtar Kelimeler |
| CMS | pseudoscalar boson | scalar boson | top quark |
BM Sürdürülebilir Kalkınma Amaçları
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| Scopus | 8 |
| Google Scholar | 59 |